Official Go implementation of the Ethereum protocol
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go-ethereum/cmd/blsync/main.go

122 lines
3.6 KiB

// Copyright 2022 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"context"
"fmt"
"io"
"os"
"github.com/ethereum/go-ethereum/beacon/blsync"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/internal/flags"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/rpc"
"github.com/mattn/go-colorable"
"github.com/mattn/go-isatty"
"github.com/urfave/cli/v2"
)
var (
verbosityFlag = &cli.IntFlag{
Name: "verbosity",
Usage: "Logging verbosity: 0=silent, 1=error, 2=warn, 3=info, 4=debug, 5=detail",
Value: 3,
Category: flags.LoggingCategory,
}
vmoduleFlag = &cli.StringFlag{
Name: "vmodule",
Usage: "Per-module verbosity: comma-separated list of <pattern>=<level> (e.g. eth/*=5,p2p=4)",
Value: "",
Hidden: true,
Category: flags.LoggingCategory,
}
)
func main() {
app := flags.NewApp("beacon light syncer tool")
app.Flags = []cli.Flag{
utils.BeaconApiFlag,
utils.BeaconApiHeaderFlag,
utils.BeaconThresholdFlag,
utils.BeaconNoFilterFlag,
utils.BeaconConfigFlag,
utils.BeaconGenesisRootFlag,
utils.BeaconGenesisTimeFlag,
utils.BeaconCheckpointFlag,
//TODO datadir for optional permanent database
utils.MainnetFlag,
utils.SepoliaFlag,
utils.GoerliFlag,
utils.BlsyncApiFlag,
utils.BlsyncJWTSecretFlag,
verbosityFlag,
vmoduleFlag,
}
app.Action = sync
if err := app.Run(os.Args); err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}
func sync(ctx *cli.Context) error {
usecolor := (isatty.IsTerminal(os.Stderr.Fd()) || isatty.IsCygwinTerminal(os.Stderr.Fd())) && os.Getenv("TERM") != "dumb"
output := io.Writer(os.Stderr)
if usecolor {
output = colorable.NewColorable(os.Stderr)
}
verbosity := log.FromLegacyLevel(ctx.Int(verbosityFlag.Name))
log.SetDefault(log.NewLogger(log.NewTerminalHandlerWithLevel(output, verbosity, usecolor)))
// set up blsync
client := blsync.NewClient(ctx)
client.SetEngineRPC(makeRPCClient(ctx))
client.Start()
// run until stopped
<-ctx.Done()
client.Stop()
return nil
}
func makeRPCClient(ctx *cli.Context) *rpc.Client {
if !ctx.IsSet(utils.BlsyncApiFlag.Name) {
log.Warn("No engine API target specified, performing a dry run")
return nil
}
if !ctx.IsSet(utils.BlsyncJWTSecretFlag.Name) {
utils.Fatalf("JWT secret parameter missing") //TODO use default if datadir is specified
}
engineApiUrl, jwtFileName := ctx.String(utils.BlsyncApiFlag.Name), ctx.String(utils.BlsyncJWTSecretFlag.Name)
var jwtSecret [32]byte
if jwt, err := node.ObtainJWTSecret(jwtFileName); err == nil {
copy(jwtSecret[:], jwt)
} else {
utils.Fatalf("Error loading or generating JWT secret: %v", err)
}
auth := node.NewJWTAuth(jwtSecret)
cl, err := rpc.DialOptions(context.Background(), engineApiUrl, rpc.WithHTTPAuth(auth))
if err != nil {
utils.Fatalf("Could not create RPC client: %v", err)
}
return cl
}